ASTROSAT CZTI

Data Quality Report

Orbit 16996

Creation date: 2024-06-27T17:30:26.888171
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_143T01_9000002524_16996cztM0_level2.evt modeM0/AS1A05_143T01_9000002524_16996cztM0_level2_quad_clean.evt
Size (bytes)527,428,80092,021,760
Size503.0 MB 87.8 MB
Events in quadrant A3,363,765578,735
Events in quadrant B3,707,539587,937
Events in quadrant C3,840,030568,048
Events in quadrant D4,574,394551,913

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147242
B0154992
C0158294
D0181972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71781161.616049%
B71791321.838696%
C71781371.908610%
D71782313.218167%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7689 7180 0 0 0.00% 0.00%
B 7690 7181 9 9 0.12% 0.13%
C 7689 7180 0 0 0.00% 0.00%
D 7689 7180 111 111 1.44% 1.55%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 8006 40.72 871 850 175.7
A 0 226 7697 38.97 871 850 175.7
A 12 189 6952 34.73 871 850 175.7
B 15 35 114650 677.4 869 845 168.0
B 3 64 57061 334.62 869 845 168.0
B 0 229 49760 291.16 869 845 168.0
C 3 233 410765 2059.56 845 850 199.0
C 14 238 128164 639.67 845 850 199.0
C 13 61 6044 26.1 845 850 199.0
D 1 52 1051084 5061.07 852 828 207.5
D 2 152 112499 538.13 852 828 207.5
D 12 110 87975 419.95 852 828 207.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter